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I didn't know much about Henry Rollins, the post-punk early 80s, Black Flag or any of those things, which made this read really engrossing.

An impressive amount of research and interview went into the book, creating a pretty convincing picture about the man and the world he came from. The author is sympathetic to Rollins, though tries to keep things reasonably objective. As a biography about a musician, this was an interesting read, covering post Rollins and the post-punk/hardcore era in the US circa late 70s to mid 80s.

My only major complaint is that the author tends to take a lot of poetic license and indulges in extravagant writing. This does a good job countering the blasting hard edges of the music in question (it's worth digging up the albums mentioned in the book, if only for context), but can also go a bit over the top.